Protective wrap



July 28,1970 l. H. Km l 3,521,741'

PROTECTIVE WRAP Filed April 25, 1968 United States Patent O 3,521,747PROTECTIVE WRAP Isadore H. Katz, 7950 Morningside Drive, Indianapolis,Ind. 46240 Filed Apr. 25, 1968, Ser. No. 724,077

Int. Cl. B65d 85/66 U.S. Cl. 206-53 1 Claim ABSTRACT OF THE DISCLOSURE Aprotective, cushioning wrap adapted for wrapping on a loaded yarn beamor spool, the wrap beingv of laminated construction having apolyethylene component at the side margins of the Wrap, a component ofextensible kraft paper and an uppermost component or layer of crepedkraft paper which carries spaced strlps of polyethylene to adapt theWrap for fastening by pressure sensitive tape. The creped kraftcomponent or sheet has a width substantially the same as the length ofthe beam or spool between its figures, the'width of the extensible kraftsheet is slightly greater than that of the creped kraft and thepolyethylene component extends substantially beyond the kraft layers oneach side of the wrap to permit the extending portion to cling to thebeam anges protecting the yarn on the spool from contamination by dust,etc.

BACKGROUND OF THE INVENTION Field of the invention The protective wrapof the present invention is particularly adapted for use in protectingdelicate yarns. Conventionally, these yarns are wound on large beams orspools and then stored or transported to the site of the Weavingoperation where the yarns are played off the beams, at high speeds, bythe weaving apparatus. The yarn itself is delicate and requiresprotection during storing or transport while wound on the beams orspools. Since the yarn must be smoothly unwound, at hlgh speed, duringthe weaving operation, any crushing of or indentation in the yarn Whileon the beams can cause diiculty and slow-down of the weaving operation.The loaded beams have a Weight of the order of eight hundred pounds andare usually lifted onto the weaving equipment by belt slings passingunder the yarn and between the end flanges of the beam. The weight ofthe yarn load itself thus applied to the yarn adjacent the sling rnakesit desirable that some type of cushioning means be provided to take upat least a portion of this compressive force on the yarn. Since theyarn, wound on the beams, may be'stored for extended periods inwarehouses where temperatures may fluctuate widely, protection of theyarn y from dust or other contaminants is essential.

Description of the prior art SUMMARY The wrap of the present inventionutilizes a soft, ilexible dust, moisture and gas impervious component,preferably polyethylene, which extends from the side margins of the wrapand clings to the adjacent end flanges of the beam or spool tosubstantially seal the yarn against dust and other contaminants. Asmooth surfaced, flexible maice terial such as a kraft sheet having awidth slightly greater than the distance :between the end flanges of thebeam underlies a flexible cushioning sheet such as creped kraft paperwhich forms the outer'surface of the wrap and performs the cushioningfunction referred to above. Spaced, longitudinal portions of the roughouter surface of the cushioning sheet are smoothed by, for example,adhering longitudinal strips of smooth surfaced, ilexible rmaterial suchas polyethylene, these providing smooth surface areas upon whichpressure sensitive tape may be applied to hold the protective coveringafter it has been wrapped on the yarn carrying beam.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an end sectional view of aprotective Wrap embodying the present invention.

FIG. 2 is a fragmentary, bottom plan view of the wrap shown in FIG. 1.

FIG. 3 is an end view of a typical beam or spool on which yarn is wound.

FIG. 4 is a fragmentary side sectional view showing the wrap of FIGS. 1and 2 in place on a beam on which yarn has been found.`

FIG. 5 is a schematic, end view of a modified form of the wrap shown inFIG. 1.

FIG. 6 is a schematic end view similar to FIG. 5 but showing a furthermodified form of the wrap.

FIG. 7 is a schematic end View, similar to FIG. 6, but showing a furthermodified form of the wrap.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring initially to FIGS. 1through 4, the wrap is laminated and is made up of an underlying sheetof ilexible, contaminant-impervious sheet 10, which, preferably, isformed of polyethylene. Strip laminated to the polyethylene sheet 10, bymeans of adhesive strips such as indicated at 11 in FIG. 2, is4 a sheetof extensible kraft paper 12. Solidly laminated to the sheet 12 is lacreped kraft paper sheet 13. The somewhat rough face of the sheet 13provides shock absonbing characteristics to the wrap. The smoothunderface of the sheet 12 protects the polyethylene sheet 10 and theunderlying yarn from the rough surface of the cushioning sheet 13. Sincethe rough surface of cushioning sheet 13 does not readily accommodatepressure sensitive adhesive tape such as might be used to hold the Wrapin place on a yarn beam to be subsequently described, strips of smoothfaced material, such as polyethylene strips 14 may be adhered to thesheet 13, the strips 14 providing a smooth face readily accepting apressure sensitive fastening tape (not shown) As may best be seen inFIGS. 3 and 4 the Ibeam on which the yarn is wrapped is generallyspool-shaped with a central barrel portion 16 and spaced end flanges 17between Lwhich the yarn is wrapped. The beams are relatively large andcan be formed of aluminum or similar material, their dimension on theparts accommodating the yarn being machined to very close tolerances andfinished very smoothly.

Yarn, indicated at 21 in FIG. 4, is wrapped at high speed on the -beamsto a height near the circumferential edge of the end flanges 17 asindicated in FIG. 4. After the beams have been loaded with yarn, thewrap of the present invention is applied by Winding it over the yarn andfastening it by pressure sensitive tape or other means.

The wrap in place upon the beam is shown fragmentarily in FIG. 4. Itwill be noted that, when in place, the polyethylene extending strip 10folds against the adjacent surface of the beam flange and serves tosubstantially seal the yarn from contaminants such as dust, etc. Theextensible kraft sheet 12 is deformed upwardly somewhat, overlying asmall portion of the polyethylene sheet at the beam ange, and the crepekraft sheet 13, presents a rough, shock absorbing outer surface to thewrap and lies, because of its relative stiffness, between the two endanges of the beam with its marginal edge abutting the slightly foldededge portion of the extensible kraft sheet 12. The difference in widthdimension between the elements 10, 12 and 13 which is plainly evident inFIG. 1 has an important functional aspect as pointed out with referenceto FIG. 4.

FIG. illustrates a modified form of the wrap in which the polyethyleneside flanges' which flexibly lie against the adjacent beam end flangesare identied at 31 and they are held between the extensible kraft sheet32 and the creped kraft sheet 33 which are solidly laminated together.Polyethylene tape strips 14 may also be provided on the outer face ofthe sheet 33. The structure of FIG. 5 thus differs from that of FIG. 1only in that the polyethylene component is composed of strips 31 at eachside margin of the wrap rather than formed lby a polyethylene sheetextending completely across the wrap.

A further modified form of the wrap is shown in FIG. 6 in which thepolyethylene component is formed of flanges or strips 41 which areadhered to the adjacent portions of the extensible kraft sheet 42, thekraft sheet being solidly laminated to the creped kraft sheet 43. Again,polyethylene strips 14 may be adhered to the outer face of the sheet 43to accommodate pressure sensitive fastening tape. The wrap of FIG. 6thus differs from that of PIG. 5 only in that the polyethylene extendingportions 41 are adhered to the under face of the extensible kraft sheet42, rather than interposed between the extensible kraft sheet and thecreped kraft sheet as in FIG. 5.

A further modified form of the wrap is shown in FIG. 7 in which thepolyethylene component is formed in anges or strips 51 adhered betweenthe extensible kraft sheet 52 and the creped kraft sheet 53, as in theconstruction of FIG. 5. The polyethylene strips in the structure of FIG.7, however, are folded over on themselves and their margins adhered tothe outer face of the sheet `52. The fold area, indicated at 51a,contacts the beam flange to provide the sealing function. Polyethylenestrips 14 may be adhered to the outer face of the sheet 53 toaccommodate pressure sensitive fastening tape.

While the invention has been disclosed and described in some detail inthe drawings and foregoing description, they are to be considered asillustrative and not restrictive in character, as other modificationsmay readily suggest themselves to persons skilled in this art.

What is claimed is:

1. A protective cushioning Wrap for a beam on which delicate yarn or thelike has ibeen wound, the 'beam being generally spool-shaped and havingend flanges between which the yarn is wrapped on the spool to a pointjust short of the circumferential edge of the end flanges, said Wrapcomprising a continuous sheet 0f smooth llexi'ble material solidlylaminated to an overlying sheet of cushioning material, said smoothsheet having a width slightly greater than the distance between the beamend flanges and said cushioning sheet having a width slightly less thanthe distance between the beam end anges, said wrap further having aflexible, contaminant-impervious strip extending substantially lbeyondeach of the side margins of the smooth sheet and adapted to fold againstthe beam side flanges when the wrap is installed on a loaded beam, saidcushioning sheet having a rough outer face, and spaced strips of smoothsurfaced flexible material adhered to said rough outer face tofacilitate fastening of the Wrap in place on a beam.

References Cited UNITED STATES PATENTS 2,127,029 8/ 1938 Hermanson229-91 X 3,128,135 4/1964 Ege 206-59 3,437,196 4/ 1969 Kulka .206-53FOREIGN PATENTS 228,570 6/1960 Australia.

JOSEPH R. LECLAIR, Primary Examiner U.S. Cl. X.R. 206-59

